JP2007192517A - Heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating device for improving palatability and doneness of a heated object after heating by heating the object while properly wetting it. <P>SOLUTION: Corona discharge between a ground electrode 24 and an ionizing needle 26 negatively charges water vapor generated from a water vapor generating means 8. The water vapor evaporating from the heated object is predisposed to be negatively charged and then condensed in a heating chamber or exhausted to the outside of the heating chamber. On the other hand, moisture positively charged remains on the surface of the heated object and so the water vapor generated from the water vapor generating means 8 and negatively charged is easily adsorbed onto the surface of the heated object positively charged. This improves the palatability and workmanship of the heated object after heated by heating the heated object while properly wetting it. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a heating apparatus that heats an object to be heated using water vapor.

  Conventionally, this type of heating apparatus circulates hot air in the heating chamber, uses a heating dish and a radiant heater, or supplies microwaves to heat the object to be heated and the like accommodated in the heating chamber. It was.

  In microwave ovens, etc., in order to achieve more delicious cooking, water vapor is filled into the heating chamber to prevent drying of the heated object by heating, or by supplying moisture to the heated object, Developments such as improving efficiency, making the temperature in the heating chamber uniform by the latent heat of water vapor, and shortening the cooking time have been made.

  As a steam generation method for the heating device as described above, water is brought into contact with an insulated heating wire or a metal enclosing the heating wire to cause nucleate boiling to generate water vapor, a hot plate heated to a high temperature, etc. There are a method of generating water vapor by dripping water, a method of generating water vapor by absorbing water in a porous material such as ceramics and heating it with microwaves, a method of generating water vapor by an ultrasonic humidifier, etc. Used (for example, see Patent Documents 1 and 2).

  In the heating device in Patent Document 1, an opening for humidification is formed in a side plate of a case, and an ultrasonic humidifier as a humidifier is disposed outside the opening. This ultrasonic humidifier is composed of a water tank portion for storing humidifying water and an excitation portion for exciting water with ultrasonic waves, and introduces water vapor into the heating chamber through the opening. As a cooking method, the humidifier is driven and controlled based on the detection output of the sensor during heating according to the type of the object to be heated.

The heating device in Patent Document 2 arranges a porous body made of quartz glass or the like inside a waveguide to which a magnetron is attached, and drops water on the upper surface of the porous body through a water supply pipe provided in the waveguide. The dropped water quickly infiltrates and is retained inside the porous body, and is heated and vaporized by the microwave supplied into the waveguide. A partition through which microwaves can pass is provided between the magnetron and the porous body, and water vapor does not flow to the magnetron side by this partition, and enters the heating chamber together with the microwave that was not used for water vaporization. Supplied. Thereby, it is made possible to serve as both generation of water vapor and cooking of food stored in the heating chamber with one magnetron.
JP-A-5-52342 Japanese Patent Laid-Open No. 2001-254952

  However, in the conventional configuration, it is not assumed that the generated steam selectively concentrates on the object to be heated and brings about a wetting effect. Therefore, a large amount of steam is inevitably generated, and cooking is performed. Thereafter, a large amount of dew condensation occurs in the heating chamber, and wasteful energy is consumed.

  Further, when the heating process proceeds and the temperature of the object to be heated becomes higher than the temperature of the water vapor, the water vapor does not condense on the surface of the object to be heated and the wetting effect is lost.

  In addition, when the particle size of the water vapor is large, the water vapor stays on the surface of the object to be heated, so that the water vapor does not penetrate into the inside and condensation occurs more than necessary on the surface of the object to be heated. There is a problem.

  This invention solves the said conventional subject, and it aims at provision of the heating apparatus which heats a to-be-heated material appropriately, and improves the taste and quality of the to-be-heated material after a heating.

  In order to solve the above-described conventional problems, a heating device according to the present invention includes a heating chamber that houses and heats an object to be heated, a steam generation unit that generates steam to be supplied to the heating chamber, and a steam generation unit that generates the steam. Charging means for negatively charging the water vapor, a plurality of steam inlets provided on the wall surface of the heating chamber, a connecting means for connecting the plurality of steam inlets, and the steam at least one of the steam inlets Steam flow means for feeding water vapor generated by the generation means, and control means for controlling the steam generation means, the steam flow means and the charging means to supply the steam with controlled vapor amount and charge amount to the heating chamber; It is set as the heating apparatus provided with.

  In general, when water evaporates from a certain substance (object to be heated), it is divided into water vapor that is negatively charged and water that is positively charged upon receiving evaporation energy. Since the water vapor fills the heating chamber and condenses on the wall surface or is discharged outside the heating chamber, moisture having a positive charge remains on the surface of the object to be heated. This positively charged moisture enters from the surface of the object to be heated and becomes a positively charged state as a whole, and the negatively charged substance is easily attracted.

  Therefore, after heating the object to be heated for a predetermined time as in the above invention, the water vapor is negatively charged and then put into the heating chamber, so that it is easily adsorbed on the surface of the positively charged object to be heated. Water vapor spreads uniformly from the surface of the heated object to the inside so as to electrically neutralize the heated object. Thus, since heating can be promoted without drying over the entire object to be heated, the taste and quality of the object to be heated can be improved.

  The heating device of the present invention can improve the taste and quality of the heated object from the surface to the inside of the heated object by charging the water vapor negatively and putting it in the heating chamber.

  The first invention includes a heating chamber for storing and heating an object to be heated, a steam generating means for generating water vapor to be supplied to the heating chamber, a charging means for negatively charging the water vapor generated in the steam generating means, A plurality of steam inlets provided on a wall surface of the heating chamber; a connecting means for connecting the plurality of steam inlets; and a steam flow for feeding water vapor generated by the steam generating means to at least one of the steam inlets. A heating device comprising: a control means for controlling the steam generation means, the steam flow means, and the charging means to supply the steam with the steam amount and the charge amount controlled to the heating chamber, When water vapor is charged negatively and placed in the heating chamber, it becomes easier to be adsorbed on the surface of the positively charged object to be heated, so that the water vapor is electrically neutralized. From Up over it goes to the uniform. Thus, since heating can be promoted without drying over the entire object to be heated, the taste and quality of the object to be heated can be improved.

According to the second invention, in particular, the steam flow means according to the first invention is an opening / closing means that closes or opens the steam flow opening portion, so that it can be used according to the object to be heated. By controlling the operation of the opening / closing means, the amount of water vapor or negatively charged water vapor in the heating chamber can be controlled, and the quality of the object to be heated can be improved by an appropriate amount of water vapor. That is, optimal heating can be performed according to the moisture content of the heated object before cooking. For example, when the upper surface of an object to be heated is to be baked and the inside is baked, the amount of water vapor is introduced into the heating chamber in the initial cooking process, water vapor is intermittently introduced in the middle, and the latter half is introduced. This is possible by heating with a microwave or heater while avoiding this.

  In the third invention, in particular, the charging means of the first invention is charged with water vapor or minus in the heating chamber by using a heating device in which the charge amount is controlled by the application voltage and application time of corona discharge. Water vapor can be supplied, and the quality of the object to be heated can be enhanced by water vapor having an appropriate charge amount. That is, optimal heating can be performed according to the moisture content and distribution of the object to be heated before cooking. For example, when the central part of a heated object has a smaller amount of water than the surface layer part, steam with a higher charge amount than usual (in the case of a heated object with a uniform moisture distribution) is introduced into the heating chamber. Heating with a microwave or a heater while making the moisture distribution of the object to be heated uniform enables more uniform heating. Conversely, when the center of the object to be heated has a larger amount of water than the surface layer, water vapor with a smaller charge amount than normal (in the case of an object to be heated with a uniform moisture distribution) is introduced into the heating chamber. Heating with a microwave or a heater while making the moisture distribution of the object to be heated uniform enables more uniform heating.

  In the fourth aspect of the invention, in particular, the steam generating means of the first aspect of the invention is a heating device in which water is vibrated by an ultrasonic oscillator to generate atomized water vapor, so that the oscillation frequency and oscillation intensity are increased. By changing it, the particle diameter of water vapor and the amount of water vapor can be arbitrarily set, and optimum heating can be performed according to the properties of the object to be heated.

  In the fifth invention, in particular, a microwave generating means for generating a microwave to be supplied to the heating chamber of any one of the first to fourth inventions is added, and the control means is a steam generating means according to the object to be heated. By controlling the operation of the charging means and the microwave generating means to heat the object to be heated, any combination of water vapor and microwave can be used for heating, so various kinds of frozen foods and refrigerated foods can be used. Heating according to the state of the object to be heated can be performed.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the placing plate on which the object to be heated is placed is constituted by a heating device that is made of a material that transmits microwaves and is detachably provided in the heating chamber. The object to be heated can be effectively heated by arbitrarily combining water vapor and microwave in a state where the dish is mounted at an optimal position in the height direction in the heating chamber or in a two-stage mounting form.

  According to a seventh aspect of the present invention, there is provided a heating apparatus in which a charged water vapor outlet is disposed in a small heating chamber space formed by the heating chamber of the sixth aspect and a detachable mounting tray. In a small high heating chamber space, the object to be heated can efficiently absorb the sensible heat of water vapor and effectively promote heating.

  In the eighth invention, in particular, input means for inputting the property information of the object to be heated according to any one of the first to seventh inventions, and a heating pattern is set according to the inputted property information of the object to be heated. A heating pattern setting means, and a heating device that controls and changes the amount of water vapor and the amount of charge charged into the heating chamber according to the property information of the object to be heated. The optimum heating can be performed according to the conditions.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a cross-sectional view of a heating device according to Embodiment 1 of the present invention, and FIG. 2 is an enlarged cross-sectional view of a main part of the heating device.

  As shown in FIG. 1, the heating chamber 1 is closed by radio waves by each wall surface formed of a metal material, and a heated object storage space 2 for storing an object to be heated is formed in the heating chamber 1. Yes. A placing plate 3 made of a non-conductive material on which the article to be heated is placed is disposed on the bottom surface of the article to be heated storage space 2. A radiation antenna 5 that radiates microwaves is disposed below the mounting plate 3 at a substantially central portion of the bottom wall surface 4 that forms the heating chamber 1. The radiating antenna 5 is disposed on the end side of a waveguide 6 that transmits microwaves, and a magnetron 7 that is a microwave generating means for generating microwaves is provided on the other end side of the waveguide 6.

  Further, a steam generating means 8 is disposed at the left bottom of the heating chamber 1. The steam generating means 8 includes a water reservoir recess 9, a water heating means 10 for heating the water reservoir recess 9 from below, and a water reservoir recess temperature detecting means 11 for detecting the temperature of the water reservoir recess 9. Further, the water storage tank 12 and a pump 15 for supplying water from the water storage tank 12 to the water reservoir recess 9 through the water supply pipe 13 and the water supply port 14 are provided.

  A plurality of steam flow opening portions 20 and 21 that are steam inlets are arranged on the left side surface of the heating chamber 1. The plurality of steam flow opening portions 20 and 21 are connected to each other through the connecting means 22 outside the heating chamber 1. The steam flow opening portion 20 which is at least one of the plurality of opening portions is an intake port for taking in the water vapor generated by the steam generating means 8, and one steam flow opening portion 21 is In addition, the air outlet is a blowout port that blows out the water vapor that has flowed through the connecting means 22 into the heating chamber 1. The connecting means 22 is provided with a water vapor charging means 23. The charging means 23 charges the water vapor particles flowing through the connecting means 22 negatively by corona discharge or the like. In the present embodiment, the charging means 23 includes an ionization needle 26 held by the ground electrode 24 and the application electrode 25, an internal booster 27 that is an application voltage circuit for applying a high voltage to the application electrode 25, A high voltage application cable 28 that feeds power from the internal booster 27 to the application electrode 25 is provided. The material of the application electrode 25 is formed of a metal such as stainless steel, copper, aluminum, or brass, and the material of the ground electrode 24 may be either an electrical conductor or a semiconductor, such as a thin plate such as stainless steel, brass, or aluminum, or A wire mesh can be used. Further, a synthetic resin mixed with a conductive material such as carbon or a member coated with a conductive paint can be used.

  Further, a steam flow means 29 is provided in order to flow the water vapor generated by the steam generation means 8 through the steam flow opening 20. The steam flow means 29 is composed of a steam lid 30 and a packing 31 made of an elastic material provided on the periphery thereof. The steam flow means 29 has a shape having a space 32 for connecting the steam generation means 8 and the steam flow opening 20 inside thereof. The steam flow means 29 is detachably mounted at a predetermined position in the heating chamber 1 so that the water vapor flows. I try not to leak.

  The radiating antenna 5 is driven to rotate by a motor 33. Further, a temperature detecting means 34 for detecting the temperature in the heated object storage space 2, and an infrared detecting means 36 for detecting the surface temperature by detecting the amount of infrared rays emitted from the surface of the heated object through the transmission hole 35, and Is provided. In addition to the temperature detection means 34 and the infrared detection means 36, the detection means related to the heating information sensing for effectively performing the heating control can be accompanied by a means for detecting the humidity in the heating chamber 1 and the like.

  The control means 37 is a heating means for the magnetron 7 and the steam generation means 8 that are the microwave generation means based on the operation input signal from the operation unit 38 that is the input means of the heating device and the signal from each detection means. Charged water vapor is supplied to the heating chamber 1 by controlling the operation of the water heating means 10 and the charging means 23. Heating conditions, control conditions, and the like are temporarily or permanently stored in storage means 39 (integrated with the control means) that is a heating pattern setting means. The operation unit 38 includes a display unit, an automatic heating operation key, a manual heating setting key, a heating start key, and the like.

  The operation of the heating apparatus according to Embodiment 1 of the present invention configured as described above will be described.

  When the user instructs the control means 37 to operate the object to be heated and the heating condition suitable for the menu by operating the operation unit 38, the object is placed on the placement plate 3 in the object to be heated storage space 2. Heating of the object to be heated is started. The control unit 37 starts controlling the operations of the magnetron 7, the water heating unit 10, and the charging unit 23, which are microwave generation units, according to the heating conditions.

  When the cooled object to be heated is reheated, the control unit 37 first operates the magnetron 7 and simultaneously receives the detection signal of the infrared detection unit 36. Based on the detection signal of the infrared detecting means 36, it is detected that there is an object to be heated in a temperature region different from the ambient temperature or a region where a temperature rise is recognized after heating for a certain time. And the control means 37 discriminate | determines momentarily the temperature distribution in the presence area | region of a to-be-heated object based on the detection signal of the infrared detection means 36, and the temperature difference of the highest temperature and the lowest temperature is more than the predetermined default value. Then, the pump 15 is operated to start supplying a predetermined amount of water into the water reservoir recess 9 and the operation of the magnetron 7 is stopped. Immediately thereafter, the control means 37 continues to energize the water heating means 10 until the water in the steam generating means 8 reaches 100 ° C. in response to a signal from the water reservoir recess temperature detecting means 11. When the water reservoir recess temperature detecting means 11 detects a predetermined temperature, a signal is given to the internal booster 27, a DC voltage is applied to the application electrode 25 via the high voltage application cable 28, and between the ground electrode 24 and the ionization needle 26. The water vapor generated from the steam generating means 8 is negatively charged by the corona discharge at. The steam generating means 8 can vary the amount of generated steam according to the amount of water supplied by the operation of the water heating means 10 or the operation of the pump 15.

  Here, the amount of water vapor can be changed by adjusting the DC voltage applied to the application electrode 25 between -1.5 kV and -2.5 kV to increase or decrease the discharge energy of the corona discharge. In addition, it is also possible to adjust the length of the application time, and control may be performed by adjusting both the applied voltage and the application time.

  If all of the water in the water reservoir recess 9 evaporates, the temperature of the water reservoir recess 9 exceeds a predetermined temperature, and the water reservoir recess temperature detection means 11 detects that the temperature of the water reservoir recess 9 exceeds a predetermined temperature, and the water heating means The energization to the application electrode 25 is stopped at the same time as the energization to 10 is stopped.

  As described above, in general, when water evaporates from a certain substance (object to be heated), the evaporation energy (in this embodiment, the heating energy by the operation of the magnetron 7, the evaporation of water by vibration energy, collision energy, etc.) And water that is negatively charged and water that is positively charged. Since the water vapor fills the heating chamber and condenses on the wall surface or is discharged outside the heating chamber, moisture having a positive charge remains on the surface of the object to be heated. This positively charged moisture enters from the surface of the object to be heated and becomes a positively charged state as a whole, and the negatively charged substance is easily attracted.

  Therefore, after heating the object to be heated for a predetermined time as in the above invention, the water vapor is negatively charged and then put into the heating chamber, so that it is easily adsorbed on the surface of the positively charged object to be heated. The water vapor is uniformly distributed from the surface of the object to be heated to the inside so as to electrically neutralize the object to be heated, so that the temperature unevenness of the object to be heated is suppressed. Thus, since heating can be promoted without drying over the entire object to be heated, the taste and quality of the object to be heated can be improved.

The user can operate the operation unit 38 before starting cooking to instruct the control means 37 of information on the object to be heated. The control means 37 determines the moisture content and moisture distribution of the instructed heated object. For example, when the central portion of a certain heated object has a smaller moisture content than the surface layer portion, it is normal (the moisture distribution is uniform). In the case of an object to be heated, more uniform heating is possible by putting steam with a larger charge amount into the heating chamber and heating it with a microwave or heater while making the moisture distribution of the object to be heated uniform. . Conversely, when the center of the object to be heated has a larger amount of moisture than the surface layer, water vapor with a smaller charge than normal (in the case of an object to be heated with a uniform moisture distribution) is introduced into the heating chamber. Heating with a microwave or a heater while making the moisture distribution of the object to be heated uniform enables more uniform heating.

  As a specific food, a porous product such as minced meat with a low water content increases the amount of charge and does not stay on the surface of the object to be heated, but actively introduces moisture into the inside. In steam cooking, the charging means 23 is not operated, and steam having a large steam particle size (so-called steam) is used to increase the amount of heat from the steam to the object to be heated and promote heating. On the other hand, in the case of reheating to supply moisture while suppressing the temperature rise of the object to be heated, or in the case of thawing cooking in which a small amount of water vapor adheres to the entire surface of the object to be heated, supply steam with reduced charge amount .

(Embodiment 2)
FIG. 3 shows a cross-sectional view of the heating device according to Embodiment 2 of the present invention.

  The heating device in the present embodiment is different from the first embodiment in the configuration of the steam flow means 29. As shown in FIG. 3, the steam flow means 29 is a hole opening / closing means 40 that closes or opens the steam flow opening 20. Alternatively, the steam flow means 29 is a suction means 41 provided in the connection means 22 for sucking water vapor.

  The aperture opening / closing means 40 is configured to control rotation switching of a shutter having an opening portion and a non-opening portion by a motor 42. When the opening of the steam flow opening portion 20 is controlled to be closed by the opening / closing means 40, the water vapor generated by the steam generating means 8 is not charged and is heated from the steam generating means 8 to the object to be heated storage space 2. It is discharged directly into. This method is a steamed dish in which the heated object storage space 2 is quickly heated to a high humidity atmosphere to heat the heated object, or an oven cooking in which the heated object storage space 2 is heated to a high temperature atmosphere of 100 ° C. or higher. Can be effective. In this case, the steam flow means 29 which is the steam flow means described in the first embodiment relaxes the degree of sealing, and, for example, a plurality of steam discharge holes (not shown) are provided in the steam lid 30. Is desirable. Next, when the opening of the steam flow opening 20 is controlled to be in an open state, the water vapor generated by the steam generating means 8 is negatively charged by the charging means 23 and heated from the steam flow opening 21. It is discharged into the object storage space 2. Thus, by controlling the operation of the opening / closing means 40 according to the object to be heated, normal water vapor or negatively charged water vapor can be supplied into the object to be heated storage space 2, and the entire object to be heated can be supplied. Since the optimum heating can be promoted without drying, the taste and quality of the object to be heated can be improved.

  The suction means 41 is used as a means for negatively charging the water vapor generated by the steam generation means 8 in the configuration in which the steam discharge hole is provided in the steam lid 30. That is, in order to charge the generated water vapor negatively and supply it to the heated object storage space 2, the opening / closing means 40 opens the opening of the steam flow opening 20 and operates the suction means 41. The water vapor generated by the steam generating means 8 is guided to the connecting means 22. The suction means 41 has a centrifugal fan configuration and is provided between the opening / closing means 40 and the charging means 23 of the steam flow opening portion 20. By providing this suction means 41, not only the water vapor generated from the steam generation means 8 is directly sucked, but also the water vapor generated by the steam generation means 8 is blown directly into the heated object storage space 2, and then the water vapor is discharged. It can also be aspirated. Further, the water vapor supplied and diffused in the heated object storage space 2 can be charged again. According to such a configuration, the steam flow opening portion 20 can be disposed at a position away from the steam generating means 8, so that the degree of freedom in arrangement can be increased.

  As the steam flow means 29, the opening / closing means 40 and the suction means 41 may be used singly or in combination, and can be appropriately selected.

(Embodiment 3)
FIG. 4 shows a cross-sectional view of the heating device according to Embodiment 3 of the present invention.

  The heating device in the embodiment is different from those in the first and second embodiments in that a detachable mounting tray on which an object to be heated is mounted is provided.

  As shown in FIG. 4, the mounting tray 50 detachably attached to the heating chamber 1 is housed in the heated object storage space 2 to form a small heating space 51 above the mounting tray 50. The mounting tray 50 is made of a material that transmits microwaves. Further, the steam flow opening portion 21 is disposed so as to blow negatively charged water vapor into the small heating space 51. A planar heater 52 is provided on the upper wall surface of the heating chamber 1. Note that support portions 53 a, 53 b, 54 a, and 54 b that support the mounting tray 50 are disposed on the left and right wall surfaces of the heating chamber 1.

  In such a configuration, when the mounting tray 50 is supported by the support portions 53a and 53b and stored, and the object to be heated on the mounting tray 50 is heated, it is charged negatively blown out from the steam flow opening portion 21. Since the water vapor diffused in the small heating space 51 with high density increases the wetting action on the object to be heated and maintains the high temperature state in the small heating space 51, the object to be heated has no uneven heating, and the object to be heated is heated. Since heating can be accelerated without drying over the entire object, the taste and quality of the object to be heated can be improved.

  Further, with such a configuration, one of the heated objects placed on the placing plate 3 and the placing plate 50 in a state of being stacked in two stages is mainly heated by microwaves, and the other is microwaves. And heating using water vapor or radiant heat from the heater 52 (negatively charged or not negatively charged) can be performed simultaneously.

  In addition, the steam flow opening part 21 which blows off steam into the to-be-heated material storage space 2 is not limited to one, and a plurality of steam flow holes 21 may be provided depending on the height direction of the heating chamber 1 or heated at the same height. A plurality of chambers 1 may be provided in the front-rear direction, or a combination thereof. Similarly, a plurality of steam flow opening portions 20 for taking in water vapor may be provided, but it is desirable to provide charging means 23 corresponding to each.

(Embodiment 4)
FIG. 5 shows a cross-sectional view of the heating device according to Embodiment 4 of the present invention.

  In the heating apparatus in the present embodiment, the steam generation means 8 is not based on boiling evaporation by a heater, but the water is vibrated by an ultrasonic oscillator to generate fine water particles from the water surface. Is different.

  In FIG. 5, the steam generating means 60 includes a water storage unit 61 and an ultrasonic oscillator 62. In this embodiment, the ultrasonic oscillator 62 uses an output variable type oscillator having an output of 40 kHz to 160 kHz, and the impedance changes according to the load (temperature, water level, power supply voltage and load change, etc.) during the master oscillation operation. The processor (not shown) corrects and controls the change of (Yes), thereby having a function of always generating fine water particles (water vapor) having a constant particle size. Moreover, the particle size of the fine water particles (water vapor) can be adjusted steplessly by adjusting the oscillation intensity (not time) steplessly.

By controlling the particle size of the water vapor, the vapor having a particle size corresponding to the state of the object to be heated can be introduced. In steam cooking, the charging means 23 is not operated, water vapor having a large particle diameter is used, the surface of the object to be heated is sufficiently moistened, and heating is accelerated by microwaves. On the other hand, in the case of reheating because water is supplied while suppressing the temperature rise of the object to be heated, or in the case of thawing cooking in which a small amount of water vapor adheres to the entire surface of the object to be heated, water vapor with a small particle diameter is used for charging. The means 23 is operated to uniformly wet the entire object to be heated, and the heating is accelerated by the microwave.

  As described above, by using a heating device in which water is vibrated by an ultrasonic oscillator to generate water vapor, the particle size of water vapor and the amount of water vapor can be arbitrarily set, and the properties of the object to be heated In combination, optimum heating can be performed.

  As described above, the heating device according to the present invention can heat the object to be heated while appropriately moistening it, and can improve the taste and quality of the object to be heated. Alternatively, it is useful as a cooking device for a cooking apparatus combined with a griller or the like.

Sectional drawing of the heating apparatus in Embodiment 1 of this invention The expanded sectional view of the heating device in Embodiment 1 of the present invention. Sectional drawing of the heating apparatus in Embodiment 2 of this invention Sectional drawing of the heating apparatus in Embodiment 3 of this invention Sectional drawing of the heating apparatus in Embodiment 4 of this invention

Explanation of symbols

1 Heating chamber 8, 60 Steam generating means 23 Charging means 20, 21 Steam flow opening (steam inlet)
22 Connecting means 29 Steam flow means 37 Control means 40 Opening / closing means 62 Ultrasonic oscillator 7 Magnetron (microwave generating means)
50 Placement plate 38 Operation unit (input means)
39 Storage means (heating pattern setting means)

Claims (8)

A heating chamber for storing and heating an object to be heated, a steam generating means for generating water vapor to be supplied to the heating chamber, a charging means for negatively charging the water vapor generated in the steam generating means, and a wall surface of the heating chamber A plurality of steam inlets provided; a connecting means for connecting the plurality of steam inlets; a steam flow means for feeding the steam generated by the steam generating means to at least one of the steam inlets; and the steam generation And a control means for controlling the steam flow means and the charging means to control the amount of water vapor and the amount of charge to control the water supply to the heating chamber. The heating apparatus according to claim 1, wherein the steam flow means is an opening / closing means for closing or opening a steam flow opening portion. The heating device according to claim 1, wherein the charging unit is configured to control a charge amount by an application voltage and an application time of corona discharge. The heating apparatus according to claim 1, wherein the steam generating means vibrates water with an ultrasonic oscillator to generate atomized water vapor. A microwave generating means for generating microwaves to be supplied to the heating chamber is added, and the control means controls the operations of the steam generating means, the charging means, and the microwave generating means according to the object to be heated to heat the object to be heated. The heating apparatus according to any one of claims 1 to 4. The heating apparatus according to claim 5, wherein the placing tray on which the object to be heated is placed is made of a material that transmits microwaves and is detachably provided in the heating chamber. The heating apparatus according to claim 6, wherein a charged water vapor outlet is disposed in a small heating chamber space formed by the heating chamber and a detachable mounting tray. Input means for inputting property information of the object to be heated, and heating pattern setting means for setting a heating pattern according to the property information of the input object to be heated, and according to the property information of the object to be heated The heating apparatus according to any one of claims 1 to 7, wherein the amount of water vapor and the amount of charge charged into the heating chamber are controlled and changed.

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